Posted by **KB** on Thursday, January 22, 2009 at 11:21pm.

The first three equations I have solved, I would just appreciate someone checking them over to make sure I'm doing them right.

Find the GCF:

16x^2z ,40xz^2 , 72z^3

= 3^3z

Factor our GCF:

a(a+1) - 3(a+1)

= a+1

Factor Polynomial:

9a^2 - 64b^2

= (3a+8b)(3a-8b)

9w - w^3

= w(3) (?really unsure if correct?)

I'm not sure how to do the following, or where to even begin. Some help getting started would be very appreciated! :)

Factor Polynomials:

x^3y + 2x^2y^2 + xy^3

x^3 + ax + 3a + 3x^2

Factor:

18z + 45 +z^2

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